A dishwasher (1), in particular a commercial dishwasher (1), which is in the form of a box-type dishwasher and has a treatment chamber (2) which can be closed and in which washware can be treated in accordance with a predefined or predefinable treatment program, wherein a washware detector apparatus (51) is designed to detect the type of washware to be, wherein the washware detector apparatus (51) has an optical identification system, which is oriented toward the washware to be treated, and an evaluation device, wherein the optical identification system is designed to record at least a portion of the light reflected by the washware to be treated as a reflection image, and wherein the evaluation device is designed to automatically distinguish between different types of washware on the basis of the recorded reflection image, wherein the extent of the reflection provides information about the type of washware.

A pump (8) is disclosed. The pump (8) includes a partition wall (84) configured to divide the interior of a body into two spaces, a first chamber (C1) located under the partition wall (84), the first chamber (C1) having an introduction portion (841), through which water is introduced, a second chamber (C2) located above the partition wall (84), the second chamber (C2) having a discharge portion (849), through which water is discharged, a communication hole (86) formed through the partition wall (84) to allow the first chamber (C1) and the second chamber (C2) to communicate with each other therethrough, an impeller (85) provided in the second chamber (C2) to move water to the discharge portion (849), a housing configured to define the bottom surface of the first chamber (C1), the housing being made of a conductor, a heater (H) configured to heat the housing (81), and a steam discharge (843) port formed through the first chamber (C1) to allow steam to be discharged therethrough.

A stand-alone dishwasher for non-plumbed, environmentally friendly dishwashing includes a washer body. A front side has a drain aperture extending through to an inner compartment of the washer body. A lid is coupled to the washer body to cover and alternatively uncover a principal aperture. A plurality of rails is coupled within the inner compartment to support a plurality of racks that is removable through the principal aperture. A floor panel is coupled to the washer body and creates a lower compartment between a bottom side of washer body and the floor panel. A heater is coupled within the lower compartment. The heater is configured to turn water within the inner compartment into steam. A plurality of controls is coupled to the lid. The plurality of controls is in operational communication with the heating element.

An ultrasonic cleaning apparatus with a cleaning reservoir having a plurality of chambers, which are selectably fillable with cleaning fluid. The chambers of the multi-chamber reservoir are fluidly interconnectable, the apparatus further comprising a fluid distribution pump and a controller for sequentially controlling a fluid flow between the chambers during an ultrasonic cleaning cycle. Such a multi-chamber reservoir has the advantage of reducing the total volume of fluid required to clean vessels in the reservoir, since the cleaning process can be performed in a staged or sequential procedure, and the cleaning and/or rinsing fluid reused in each chamber, allowing the apparatus to be more compact.

A dishwasher (100) is disclosed. The dishwasher (100) includes a cabinet (1) having an opening (11), a tub (2) provided in the cabinet (1) for receiving objects to be washed, a spray arm (711, 713) for spraying wash water to the objects, a sump (3) for storing wash water, a pump (8) for supplying the wash water stored in the sump (3) to the spray arm (711, 713), a door (13) for opening and closing the opening (11), a first steam nozzle (42) provided in the tub (2), a docking unit (62) provided at the door (13) and connected to the first steam nozzle (42) for supplying steam to the first steam nozzle (42), and a docking connector (64) provided at the tub (2) and is connected to a steam source for supplying steam to the docking unit (62), wherein, when the door (13) is opened, the docking unit (62) is disconnected from the docking connector (64), and, when the door (139 is closed, the docking unit (62) is connected to the docking connector (64) to define a closed path along which steam flows.

A pump (8) is disclosed. The pump (8) includes a partition wall (84) configured to divide the interior of a body into two spaces, a first chamber (C1) located under the partition wall (84), the first chamber (C1) having an introduction portion (841), through which water is introduced, a second chamber (C2) located above the partition wall (84), the second chamber (C2) having a discharge portion (849), through which water is discharged, a communication hole (86) formed through the partition wall (84) to allow the first chamber (C1) and the second chamber (C2) to communicate with each other therethrough, an impeller (85) provided in the second chamber (C2) to move water to the discharge portion (849), a housing configured to define the bottom surface of the first chamber (C1), the housing being made of a conductor, a heater (H) configured to heat the housing (81), and a steam discharge (843) port formed through the first chamber (C1) to allow steam to be discharged therethrough.

A dishwasher includes: a tub that defines an washing chamber; spray nozzles configured to spray washing water into the washing chamber; a sump configured to store washing water; a steam nozzle configured to supply steam to the washing chamber; a washing pump housing coupled to the sump and connected to the spray nozzles or the steam nozzle; a heater configured to heat washing water in the washing pump housing; a washing motor configured to rotate an impeller; a washing water outflow pipe defining an outflow path protruding outward from one side of the washing pump housing; a steam discharge pipe that extends from a discharge port defined at a circumferential surface of the washing water outflow pipe; and a first protrusion disposed in an upper portion of the outflow path and disposed downstream of the discharge port in a flow direction of the washing water.

A method for controlling a dishwasher includes: supplying washing water to a sump; rotating an impeller disposed in a washing pump by a washing motor so that the washing water flows into the washing pump from the sump;

operating a heater disposed in the washing pump so as to heat the washing water existing in the washing pump and generate steam to supply to a steam nozzle; and supplying the washing water or steam in the washing pump to the steam nozzle by rotating the impeller at a second set rotational speed lower than a first set rotational speed by the washing motor. The method further includes closing a selector valve, configured to open and close a path between the washing pump and the steam nozzle, when the impeller rotates at the first set rotational speed or higher.

A dishwasher includes: a case; a tub; a door; a sump disposed below the tub and configured to store washing water; a spray nozzle configured to spray washing water into the tub; a heater configured to heat washing water and generate steam; a steam nozzle disposed at the door or the tub and configured to discharge steam to the tub; a first rack disposed in the tub and configured to receive a washing target to be washed by washing water sprayed from the spray nozzle; and a second rack disposed in the tub and configured to receive a washing target to be washed by steam supplied from the steam nozzle. The steam discharged from the steam nozzle is supplied to an inside of the second rack through one of a lower surface or a circumferential surface of the second rack.

A dishwasher according to an embodiment of the disclosure includes a main body, a tub disposed inside the main body, having a washing chamber formed therein, and having an opening at a front side thereof, a basket configured to be rotatable in a first or second direction inside the tub, a driver configured to supply power to rotate the basket, and a door configured to be rotatable in the first direction based on a rotation of the basket in the first direction so as to open or close the opening of the tub.